4 is a perfect square because 2 x 2 =

The first term, 4x2, is the square of 2x, and the last term, 36, is the square of 6 (or, in this case, –6, if this is a perfect square).

Step-by-step explanation:

The first term, 4x2, is the square of 2x, and the last term, 36, is the square of 6 (or, in this case, –6, if this is a perfect square). However, looking back at the original quadratic, it had a middle term of –25x, and this does not match what the pattern requires. So: this is not a perfect square trinomial.

4 packs of water and 7 packs of candy bars

step-by-step explanation:

35x4=140

140/20=7

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation: